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Expired European patentEurope

A phase difference film comprising polymer film having ultraviolet curable resin composition for alignment film and liquid crystalline compound

EP 1372004 B1 · Applicant: NIPPON KAYAKU KABUSHIKI KAISHA

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed February 22, 2002 and granted May 11, 2011. A European patent lasts at most 20 years from filing, so its term ended February 22, 2022.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledFebruary 22, 2002
PublishedDecember 17, 2003
GrantedMay 11, 2011
Term endedFebruary 22, 2022
Application numberEP 02700708
Classification (CPC)G02B5/3016 +2 more

Timeline

Timeline From EPO dates

2003200520072009201120132015201720192021Application filedFeb 22, 2002PublishedDec 17, 2003Patent grantedMay 11, 2011Term endedFeb 22, 2022

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

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Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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